Samuel lyle rogers



May 24, 1927.

1,630,031 5. ROGERS UMBLICAL CORD CLAMP Fil ed April 19. 1926 sive and eas'yfto manufacture.

ama Ma; 24, 1927.)

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I; Ap Ilcatlon-fiIed ApflI 19, 1925. s ria No. 1 03,0371 l This invntiba reiaas ito new we It light inweight, hence'worn without; incon venience or inj try to the infant r and 1 can be. aa'easily removed, constantly sterihzed? and used without impairment of'utility; w"

e provement in umbilical cord clamps willap pear in the following descriptioni 1 In the accompanying drawingsfwhich illustrate" the preferred embodiment vof the w invention; "Figure "1,; is a side view, Figures I 2 and 3 are end views,-andFigure" i an 'ele-' vation showing the improvedv clamp applied a to the cord'and'; Figure 5 a sagittalsection of the cord after removal of instrument.

r .clrawings'., 5 v s H V The instrument embodyingmyinventlon comprises the; two compression blocks or i grippingfjaw members 1 and 2 provided on the approximated surfaces with any typeof clamping faces: so jthat the depressions of one it matches "elevations of they other, v the drawing showinga longitudinal.tongue and i groove type as illustrated at3 in Figure 3 which is easy .to manufacture and'found to I be entirely'satisfactory in present use of the instrument. @111 this modification a suitable element such as a peg on oneJface and seat on other as shown in Figures l and-2 may" 1 be used to prevent relative longitudinal movements of ,--thecompression members.

The block 1 is provided with aperture 4 extending from the grooved face to opposite surface, and aslotfl5 as well shownin Figs. 1 and 2. The other compression mem end shown at.6" and 7.] Apertures 8 and 9,

7 her 2 is provided with similar slots in either are drilled; into which respectivelypins 10 and 11 are riveted. Onto pin 8 is swung the arm or spring shackle 12 throughthe .outer end of which the pin l 0passestrans- 1 .versely. To said pin a lever spring of suit able strength 14' issecured as indicated'in the drawings; V p L 3 The spring is also secured at its mld point ineXpen- Further objectsand advantages of this inrfrom shown, by a rivet throughxthe, {aperture- 4 provided as above;

r A suitable compression lever as may be from'the same stock as thecompres s v Figs.1, 3, and l. This likewise=has aisl'ot sion'mc'mbers is. also provided .assho.wn; in

17 with the aperture throughwhich passes pinv 18. link 19 serves .to*hingethe compression: lever .16 to the icompressionjaw 2i & agAgisecond aperture 20 in memberilfiQisf drilledtoreceivethe yoke 21 which is adapt- I ed to swing over the ends of the compression 1 p g V r members and engage, inthe groove'or seat 1 22 of the spring Mata distance fronizthe pin 15 equal tothedistanceyof- -pin 15jfrom pin'1-3r Forconvenience awlipo23'mayibe 1 provided as is obviousJqThe width of 'the 1- spring should bejequalgto 'that' of the'compression jaws and lever to make it 5 rigid and to firmlyyreceiveithe "outer-end of the yokeomember 21-and to enhanceithe idur'a f i "Similar referencecharacters indicate cor-' respondingparts' on all the figures v of the bility of'the "instrument; 1

f. JThePo eratiOn of device is as anwsa Normally the parts occupy the position shownin Fig; 1." "To apply, it is'apparenp I jthatthel compression lever-16 is swu'ng outl' Ward by forces applied at the end r-24vwhic'hs,

cipleofthis type ofirelease being common it i silbelievedwthat further detail is unwarranted. Yoke 21 having been thus displaced is obvious that 'the said compression'members may beseparated'widely to receive the action of r unsevered cord throughthe hinge the spring 14 and its shackle 12."

The-apparatus is now applied transversely to the umbilical cord close to the cutaneous surface the yoke'slipped over the lip 23 v into the seat or groove 22 and brought back,

into place as shown in theapplied' drawing Fig- 4, an cord cut close to outersurfaceid ofthe compression members. practice a roove 22 and-swung outward and" away -from the compression aws 1 and 2 it "in turnlshso'provided that the thumb and v I forefingercan'easilygrasp'same;.-fThe prinpad of aseptic gauze or cotton and sterile;

instrument and contained funic stump.

gauze binder are pinned in place over the It will be noted at once thatthe novel feature of this funicclamp is the factthat' r the compression membersse arate inparal 'flel when the cord is place between them Y and that asWhartons jelly 1s squeezed out the constant tension of the spring is exerted equally to all parts of the compressed stump, even though one side becomes more depressed than another due to position of umbilical arteries and vein or other variations in size or contour, thus absolutely prevente ing any danger of instrument becoming detached.

In twenty-four hours, all that remains of the stump is a thin ribbon'of dry tissue, a sagittal cross section of which is shown in Fig. 5, 26 indicating the cut. end, from which Whartons jelly has exuded, while 27 indicates the impression caused by the tongue and groove of the compression jaws, all of which is clipped off, at the end of twentyfour hours at junction of stump andcutaneous margin.

It will be noted that this instrument is complete in itself, i. e. no. accessory instru ments are used in its application and that it is applied .to the intact corc, it being found from experience that it is impossible to neatly apply a clamp to the slippery cut and bleeding cord. This factor together with the constant compression force exerted by the durable and strong lever spring acting at the mid point of the compression jaws is firmly believed to render a much needed clamp in the art and scienceof medicine especially one adapted to the care of the umbilical cord. By the oldi ethod of tying the cordit often takes ten days and not unusually much longer for the cord to slough off, and in the meantime there is grave danger of umbilical infection, not only because of an open wound but the presence of the large umbilical vessels serve as a portal of entrance. Further gradual absorption of the septic materials resulting from the necrosis of the stump is believed by many to be the exciting cause for such symptoms as jaundice of the new-born. Clamps now in the art will not remain in position, are not easy to apply, and not durable.

The clamp designed, as pointed out, may be made of any material which will not. corrode and is resistant to fluids and acids, but aluminum for the compression.members and lever is preferred as it not only combines the above qualities but makes the instrument extremely light in weight, yet durable, and adds tov thequalities of simplicity, ease of application, and positiveness of retention, that of ease of manufacture, and: nondeterioration by sterilization. i

Various changes in the form, proportion, and minor details of construction may be resorted to without departing from thespirit or sacrificing any of the advantages of this invent-ion. 1

Having described my invention, I claim as new. and desire to secure by Letters Patent:

1. An umbilical. cord clamp provided wi h a lever spring swung from a shackle at one end and yoke at other, and said yoke BX6l't ing tension on the spring by its eccentric pivot action through a single lever hinged. to one of the compression jaws.

2. An umbilical cord clamp provided with a lever spring swung from a shackle at one end and yoke at other, hence'when under compression, exercising pressure onone compression member from the center, and from other compression member at either end.

3. An umbilical'cord clamp consisting of two compression blocks which approach one to the other'in parallel, said approach being brought about by a tension spring attached to. one of said compression blocks at the center thereof, and attached to the other block by a link at one end, and through a yoke, compression lever and link to the other end thereof.

In testimony whereof I aflix my signature.

. SAMUEL LYLE ROGERS. 

